Short for Peripheral Component Interconnect, PCI was introduced by Intel in 1992, revised in 1993 to version 2.0, and later revised in 1995 to PCI 2.1 and is as an expansion to the ISA bus. The PCI bus is a 32-bit (133MBps) computer bus that is also available as a 64-bit bus and was the most commonly found and used computer bus in computers during the late 1990's and early 2000's. Unlike, ISA and earlier expansion cards, PCI follows the PnP specification and therefore does not require any type of jumpers or dip switches. Below is an example of what the PCI slots looks like on a motherboard. In the picture, there are three PCI slots, PCI4, PCI5, and PCI6.

CNR slot

Today's computers and motherboards have replaced PCI with PCI Express (PCIe) slots.

Examples of PCI devices

PCI device drivers

If you are looking for PCI drivers, you most likely need to get the drivers for the installed PCI device. For example, if you need a PCI Ethernet adapter driver you need the drivers for the PCI network card. See our drivers section for all computer drivers.

Related questions and help with PC

Also see: Bus, Expansion slot, Mini PCI, Motherboard terms, PCI-X, PIIX, PXI